<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>绑定样式</title>
    <style>
        .basic {
            width: 400px;
            height: 100px;
            border: 1px solid black;
        }

        .happy {
            border: 4px solid red;;
            background-color: rgba(255, 255, 0, 0.644);
            background: linear-gradient(30deg, yellow, pink, orange, yellow);
        }

        .sad {
            border: 4px dashed rgb(2, 197, 2);
            background-color: gray;
        }

        .normal {
            background-color: skyblue;
        }

        .atguigu1 {
            background-color: yellowgreen;
        }

        .atguigu2 {
            font-size: 30px;
            text-shadow: 2px 2px 10px red;
        }

        .atguigu3 {
            border-radius: 20px;
        }
    </style>
    <script src="js/vue.js"></script>
</head>
<body>
<div id="root">
    <!-- 绑定class样式，字符串写法 适用于：样式的类名不确定，需要动态指定-->
    <div class="basic" :class="dynamicClass" @click="changeMood">{{name}}</div>

    <!-- 绑定class样式，数组写法 适用于：要绑定的样式个数不确定、名字也不确定-->
    <div class="basic" :class="mulitClass">{{name}}</div>

    <!-- 绑定class样式，对象写法 适用于：要绑定的样式个数确定、名字也确定，但要动态决定用不用-->
    <div class="basic" :class="classObj">{{name}}</div>

    <!-- 绑定style样式--对象写法 -->
    <div class="basic" :style="styleObj">{{name}}</div>

    <!-- 绑定style样式--数组写法 -->
    <div class="basic" :style="styleArr">{{name}}</div>
</div>
<script>
    Vue.config.productionTip = false;
    new Vue({
        el: '#root',
        data: {
            name: '测试文字',
            dynamicClass: 'normal',
            mulitClass: ['atguigu1', 'atguigu2', 'atguigu3'],
            classObj: {
                atguigu1: false,
                atguigu2: false
            },
            styleObj: {
                fontSize: '40px',
                color: 'black'
            },
            styleArr: [
                {
                    fontSize: '40px',
                    color: 'blue',
                },
                {
                    backgroundColor: 'gray'
                }
            ]
        },
        methods: {
            changeMood() {
                this.dynamicClass = 'happy';
            }
        }
    });
</script>
</body>
</html>